Constructing metal-free heterophotocatalyst using two-dimensional carbon nitride sheets and violet phosphorene for highly efficient visible-light photocatalysis

作     者：Yong Wang Chengxin Zeng Liting Wu Yalin Dong Yu Zhang Dingyi Yang Wen Hu Jian Hao Hongzhe Pan Rusen Yang Yong Wang;Chengxin Zeng;Liting Wu;Yalin Dong;Yu Zhang;Dingyi Yang;Wen Hu;Jian Hao;Hongzhe Pan;Rusen Yang

作者机构：Academy of Advanced Interdisciplinary ResearchSchool of Advanced Materials and NanotechnologyXidian UniversityXi’an 710126China Department of PhysicsShaanxi University of Science and TechnologyXi’an 710021China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical EngineeringNingxia UniversityYinchuan 750021China School of Physics and Electronic EngineeringLinyi UniversityLinyi 276005China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第146卷第15期

页      面：113-120页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.12104352,12204294,and 51973170) Fundamental Research Funds for the Central Universities(Nos.XJS212208 and 2020BJ-56) Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering(No.2022-K67) the National Natural Science Foundation of Shaanxi Province(Nos.2019JCW-17 and 2020JCW-15) the Natural Science Foundation of Shandong Province(No.ZR2019MA042) 

主　　题：Heterostructures DFT calculations Visible-light photocatalysis 

摘      要：Two-dimensional(2D)carbon nitride sheets(CNs)with nanoscale thickness have great potential in solar energy conversion owing to their intrinsic ***,their photocatalytic efficiency falls far below the practical requirements because the generated electron-hole pairs rapidly *** construct a metal-free 2D p–n junction heterophotocatalyst from CNs and violet phosphorene(VP)using a simple electrostatic self-assembly *** experimental results and density functional theory calculations show that the built-in electric field of the p–n junction promotes photogenerated carrier transport at the heterojunction interface,thereby promoting the separation of photogenerated electron-hole *** visible-light illumination,the visible-light photocatalytic hydrogen and CO production rates of the CNs/VP heterojunction were increased by 5.85 and 1.51 times,respectively,when compared to that of *** study provides new insights into the design of metal-free heterogeneous photocatalysts with high catalytic activity。